SINGAPORE – They were written off as a novelty act when they first came to fame as winners of television reality show The Sing-Off in 2011.

Since then, American a cappella group Pentatonix has become a force to be reckoned with in the global pop world. Albums such as their 2015 self-titled release and 2016’s A Pentatonix Christmas topped the Billboard charts, their list of awards include three Grammys and their YouTube videos have clocked over 4.4 billion views.

Please subscribe or log in to continue reading the full article. Learn more about ST PREMIUM.

Enjoy unlimited access to ST’s best work

  • Exclusive stories and features on multiple devices
  • In-depth analyses and opinion pieces
  • ePaper and award-winning multimedia content